/Engine/Source/Editor/UnrealEd/Public/Kismet2/BlueprintEditorUtils.h
Whether or not the blueprint should regenerate its class on load or not. This prevents macros and other BP types not marked for reconstruction from being recompiled all the time
static bool ShouldRegenerateBlueprint ( [UBlueprint](API\Runtime\Engine\Engine\UBlueprint) * Blueprint )